▎ 摘　　要

NOVELTY - Preparing high-strength chitosan, involves adding chitosan powder into certain amount of acidic solution, stirring and completely dissolving chitosan powder to obtain chitosan solution; degassing to the obtained chitosan solution to obtain transparent chitosan solution; utilizing the transparent chitosan solution as original spinning solution, directly spraying silk into coagulation bath or using dry spraying wet spinning method by wet spinning method to obtain fibrous chitosan-based gel, carry out drawing orientation to the fibrous chitosan-based gel gained in step; placing the fiber gel into alkaline elution bath, eluting to obtain regenerated chitosan fiber gel; washing with deionized water, drying, and collecting. USE - Preparation method of high-strength chitosan fiber used for surgical suture line, antibacterial fabric, high-end sanitary nursing product, biological medicine, drug delivery, hemostatic material, wound dressing and regeneration tissue engineering. ADVANTAGE - The method provides high-strength chitosan fiber, which has low cost, green and environmentally-friendly, simple technique, high wet strength, compatible with the existing wet spinning machine, and has great application potential. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a high strength chitosan.